The threat actors behind the Windows-based Grandoreiro banking trojan have returned in a global campaign since March 2024 following a law enforcement takedown in January.
The large-scale phishing attacks, likely facilitated by other cybercriminals via a malware-as-a-service (MaaS) model, target over 1,500 banks across the world, spanning more than 60 countries in Central and South
The stealer malware known asΒ LummaC2Β (aka Lumma Stealer) now features a new anti-sandbox technique that leverages the mathematical principle of trigonometry to evade detection and exfiltrate valuable information from infected hosts.
The method is designed to "delay detonation of the sample until human mouse activity is detected," Outpost24 security researcher Alberto MarΓnΒ saidΒ in a technical